Transfer-bridge.



No. 743,901. PATEN'ED NOV. 10, 1903. A. H. MALLERY. TRANSFER BRIDGE. APPLICATION FILED rma, 7,1903. A No MODEL. a SHEETS-SHEET 1.

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N0.,743,901. 'f PATENTED NOV. 10, 1903.

' A. H. MALLERY.

TRANSFER BRIDGE.

APPLIUATION FILED rma. 1,1903. l

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PATENTED NOV. l0, 1963.

A. H. MALLERY.

TRANSFER BRIDGE.

APPLIOATION FILED PEB. 7,1903.

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UNITED STATES Patented November 10, 1903.

ARLINGTON HUMPHREY MALLERY, OF NEX/V YORK, N. Y.

TRANSFER-BRIDGE.

srncrrrcnrron forming part of Letters Patent No. 743,901, dated November 1o, 1903. npli'oation tiled February 7, 1903. Serial No. 142,317; (No model.)

To @Z6 whom it 11i/ay conceive:

Beit known that ARLINGTON HUMPHREY MALLERY, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented anew and Improved Transfer-Bridge, of which the following is a full, clear, and exact description.

This invention relates to improvements in bridges for transferring railway-cars from oats to docks or from docks to loats, an object being to provide a bridge so constructed and arranged that it will at all times practically maintain an even balance, and, further, to provide a simple means for securing the bridge toa boat or oat whereby no torsional strain will be imparted to the bridge through the rocking motion of the float.

l will describe a transfer-bridge embody- 4ing my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of a transfer-bridge embodying my invention. Fig. 2 is a section on the line .ccof Fig. 1. Fig. 3 is an end elevation partly in section. Fig. 4t is a plan view of the front frame. Fig. 51's a sectional view of a rocking member with which the float is designed to engage, and Fig. 6 is a front view thereof.

I have here shown the bridge as consisting of two sections arranged side by side operating one independently of the other; but in some instances a greater number of sections may be employed.

Arranged at the Water end or at the end of the bridge designed to be engaged with a oat is a frame which consists of the pillars 1, connected at the top by a skeleton beam 2. These pillars and the beam 2 are preferably for strength and economy of material mad-e of steel angles and plates. Arranged toswing vertically at one `end with relation to the frame are the bridge-sections A B, and the opposite ends of these bridge sections are hinged to a dock or the like in the usual manner. Mounted in the opposite side portions A cable or chain 7 is attached at one end to the beam 2 andthen passes around the sheave 5 and thence upward over a single sheave 8, mount- Y ed iu the beam 2. From this sheave 8 the cable extends over a double sheave 9 and thence to a connection with a Weight 10, movable up and down in the pillar. A similar cable or chain 11 is secured at one end to the beam 2 and passes around the sheave 6 and thence overV the double sheave 9 to connestion with the Weight 10. Mounted in opposite sides of the bridge-section B are sheaves 12 13, and a cable 14 is attached at one end to the beam 2, passes around the sheave 12, then over a single sheave 15 in the upper portion of the frame or in the beamj2, and then over a double sheave 16 to connection with 'av weight 17. Arcable or chain 18 is connected at-one end to the beam 2, passes around the sheave 13, and then over the double sheave 16 to the weight 17. By this arrangement of cables and Weights the bridge-sections are practically evenly balanced and held from undue rocking motion as cars are passing on or 0E the same.

Pivoted to the outer'end of each bridgesection is a rocking member consisting of a frame 19. At its center the rocking member 19 has a pin `or pintle 20, which extends longitudinally4 of the bridge-sections and has bearings in plates 21 22. either square at one end and round vat one end or round throughout. On the upper side of each swinging member are loops or keepers 23, called toggle-pockets, designed to receive bolts or rods 24,ealled toggle-bars, extended from the deck of the float 25, these devices being designed to hold the float from lateral motion with relation to the end of the bridge. By this arrangement of the rocking member it is obvious that the float may be rocked freely from side to side, of course carrying with it the rocking member 19, Without imparting any torsional or like strain Vo n the bridge-sections.

On each rocking section 1 9 are rail-sections 26, designed to be placed in alinement with the rails 27 on the float. Arranged between the ends of the main tracks or rails 28 of the bridge-sections and the rail-sections 26 are vertically-swinging track orrail sections 29. These sections 29 are mounted to swing on rods or hinges 80, and obviously they will This pin may be roo,

move up and ldown with the rocking movement ofzthemember 19 and prevent the dropping of the car-wheels from one track-section to another.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent- 1 l. The combination with a transfer-bridge of an end member mounted to rock in vertical plane and transversely of the bridge.

2. The combination with a transfer-bridge, of a member centrally pivoted to one end of the bridge so as to rock on a horizontal axis, and means for locking a float to said member.

3. The combination with a swinging transfer-bridge, of a member pivoted on one end of the bridge to rock on a horizontal plane, railsections on said member, and verticallyswinging rail sections between said firstnamed rail-sections and the main sections of the bridge.

4. In a transfer-bridge, an end framing, a vertically-swingingbridge-section, sheaves in the upper portion of the frame, cables or chains extended from the opposite sides of the bridge-section over said sheaves, and a weight with which both of said cables or chains connect.

5. In a transfer-bridge, a vertically-swinging platform or bridge-section, a counterbaiance for the platform or bridge-section, a member mounted to rock on one end of the platform or bridge-section, the pivot thereof being extended lengthwise of the bridge, and keepers on the top of the rocking member for receiving bolts carried by a float.

6. A transferbridge and va member attached to the end thereof, the said bridge and member having a relative rocking motion in vertical plane and transversely of the bridge.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARLINGTON HUMPHREY MALLERY.

Witnesses:

JNO. M. RITTER, C. R. FERGUSON. 

